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Zorbax Eclipse XDB

Conversion and diastereomeric excess were determined on an Agilent HPLC system using a Zorbax eclipse XDB Cl8 column (4.6 mm x 150 mm) at a gradient from 35/65 MeCN/water (0.1 % H3PO4) to 95/5 over 14min at 1 mL min , room temperamre, 210 nm. [Pg.277]

FIPLC (Zorbax Eclipse XDB- Fluorescence C8), sodium acetate and calcium chloride pH 6.9... [Pg.11]

The stability of pantoprazole, omeprazole, and lansoprazole was studied chromatographically [17]. The three compounds were monitored using a HPLC system based on a Zorbax Eclipse XDB Cg-column (5 pm 150 cm x 4.6 mm i.d.), a mobile phase consisting of 700 300 v/v phosphate buffer acetonitrile (with the pH adjusted to 7.0 with phosphoric acid), and detection at 280 nm. The method was used to study the effect of pH and various salts on the stability of the three compounds. The study showed that pantoprazole was the most stable compound and that lansoprazole was the least stable. The stabilities of the compounds in salt solutions were found to be in the following order ... [Pg.253]

Figure 2-14. Retention of alkylbenzenes (benzene-octylbenzene) on Agilent Zorbax-Eclipse XDB C18 colnmn from different composition of acetonitrile/water eluent. Left pane Retention volumes right pane Retention factors. Figure 2-14. Retention of alkylbenzenes (benzene-octylbenzene) on Agilent Zorbax-Eclipse XDB C18 colnmn from different composition of acetonitrile/water eluent. Left pane Retention volumes right pane Retention factors.
Figure 4-5. Retention volnme versns % acetontirle composition. Chromatographic conditions colnmn, 15cm x 0.46cm Zorbax Eclipse XDB-C8 eluent, 0.1% H3PO4 50-80% MeCN flow rate, 1 mL/min temperature 25°C. Figure 4-5. Retention volnme versns % acetontirle composition. Chromatographic conditions colnmn, 15cm x 0.46cm Zorbax Eclipse XDB-C8 eluent, 0.1% H3PO4 50-80% MeCN flow rate, 1 mL/min temperature 25°C.
Figure 4-52. Acetonitrile excess adsorption isotherm from water on Zorbax Eclipse XDB-C8 adsorbent (left) normalized filling of adsorbed layer (right). (Reprinted from reference 165, with permission.)... Figure 4-52. Acetonitrile excess adsorption isotherm from water on Zorbax Eclipse XDB-C8 adsorbent (left) normalized filling of adsorbed layer (right). (Reprinted from reference 165, with permission.)...
Figure 4-57. Effect of tetrafluoroborate concentration on analyte apparent efficiency and tailing factor. Column Zorbax Eclipse XDB-C8. Mobile phase 0.1 v/v% phosphoric acid -H XBE4 [l-50mM] acetonitrile, ophthalmic compounds (10% acetonitrile), phenols (25% acetonitrile). (A) N(ji/2) versus tetrafluoroborate concentration. (B) Tailing factor versus tetrafluoroborate concentration. (Reprinted from reference 153, with permission.)... Figure 4-57. Effect of tetrafluoroborate concentration on analyte apparent efficiency and tailing factor. Column Zorbax Eclipse XDB-C8. Mobile phase 0.1 v/v% phosphoric acid -H XBE4 [l-50mM] acetonitrile, ophthalmic compounds (10% acetonitrile), phenols (25% acetonitrile). (A) N(ji/2) versus tetrafluoroborate concentration. (B) Tailing factor versus tetrafluoroborate concentration. (Reprinted from reference 153, with permission.)...
Chromatographic Conditions Column 15 cm x 0.46cm Zorbax Eclipse XDB-C18... [Pg.223]

Pack a silica capillary-scale microcolumn (150pm i.d.) 7.5cm of C18 reverse phase packing material (Zorbax eclipse XDB-Cis resin). [Pg.1499]

Stationary phase Zorbax Eclipse XDB-C18 Mobile phase mixture of 0.01% NH4OH solution in 5 niM ammonium acetate and 0.01% NH4OH solution in acetonitrile Gradient elution Flow rate 1.0 mL/min Stationary phase Acquity BEH CIS Mobile phase 2 mM ammonium acetate in water and 2 niM annnonium acetate in methanol Gradient elution Flow rate 0.4 mL/min... [Pg.313]

Figure 8.96 Simultaneous determination of various mercury species with element-specific detection. Separator column Zorbax Eclipse XDB-C18,5 (im column dimensions 50 mm X 2.1 mm i.d. eluent 60 mmol/L ammonium... Figure 8.96 Simultaneous determination of various mercury species with element-specific detection. Separator column Zorbax Eclipse XDB-C18,5 (im column dimensions 50 mm X 2.1 mm i.d. eluent 60 mmol/L ammonium...
Agilent Zorbax Eclipse XDB-C18 (4.6x50 mm, 1.8 pm) (Agilent, Mississauga, ON, Canada) with 0.2 pm stainless steel flit guard assembly (Waters Acquity UPLC part 205000303). [Pg.32]

THC-COOH- Plasma, glucuronide urine LEE and SPE (Certify) Zorbax Eclipse XDB CS 2.1x150 5 Isocratic 20 mM ammonium acetate pH 4.0/ methanol/ acetonitrile (41 41 lS,by volume) 7 QqQ ESl-t (2)... [Pg.77]

Stationary phase Zorbax Eclipse XDB-C18 with a frit guard assembly UPLC. ... [Pg.192]

See other pages where Zorbax Eclipse XDB is mentioned: [Pg.287]    [Pg.65]    [Pg.230]    [Pg.212]    [Pg.201]    [Pg.159]    [Pg.325]    [Pg.81]    [Pg.83]    [Pg.89]    [Pg.1494]    [Pg.2539]    [Pg.1482]    [Pg.381]    [Pg.550]    [Pg.550]    [Pg.551]    [Pg.56]    [Pg.863]    [Pg.3357]    [Pg.256]    [Pg.256]    [Pg.256]    [Pg.273]    [Pg.324]    [Pg.62]    [Pg.341]    [Pg.155]    [Pg.186]    [Pg.202]   
See also in sourсe #XX -- [ Pg.2 , Pg.18 , Pg.863 ]

See also in sourсe #XX -- [ Pg.18 , Pg.250 , Pg.273 , Pg.324 ]



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